Characterisation of lignins isolated from Bamboo organosolv and kraft black liquor

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dc.creatorNusirat Aderinsola Sadiku
dc.creatorAbdulazeez Faruq Yusuph
dc.date2023
dc.date.accessioned2026-07-07T04:38:44Z
dc.descriptionBamboo biomass was pulped using organosolv methods: Acetic acid and formic acid; hydrogen peroxide and formic acid; ethanol and water and kraft process with varying concentrations of the cooking chemicals. The properties of the isolated lignin were influenced by the black liquor pH as well as the pulping method. Highest pH (12,8) was recorded for kraft at 70:30 liquor concentration while lowest pH of 2,5 was recorded for both Aceticformic (70:30) and Ethanol/water (70:30 and 60:40). There were obvious differences in the characteristic colours, shapes and sizes of the lignin samples. Bamboo kraft lignin samples formed large pieces much easier than that of Organosolv. Aceticformic (70:30) had the best filteration properties (FC) while Ethanol/water had the poorest. Generally, kraft recorded the highest lignin yield while all the organosolv processes recorded reduced yield. Highest yield (119,25 g/L) was gotten from kraft (50:50) while Peroxyformic (60:40) had the lowest yield of 8,20 g/L. The results showed that higher liquor pH favours total dissolved solid as well as lignin precipitation. As the pH increases, total dissolved solid, yield, Klason and low molecular weight (LMW) lignin content increases while FC decreases. The Klason and LMW lignin content increased with incresing lignin yield.
dc.formatapplication/pdf
dc.identifier0717-3644
dc.identifierhttps://www.redalyc.org/articulo.oa?id=48575202015
dc.identifierhttps://www.redalyc.org/journal/485/48575202015/
dc.identifierhttps://www.redalyc.org/journal/485/48575202015/html/
dc.identifierhttps://www.redalyc.org/journal/485/48575202015/48575202015.epub
dc.identifierhttps://www.redalyc.org/journal/485/48575202015/movil
dc.identifier10.4067/s0718-221x2023000100415
dc.identifier.urihttp://hdl.handle.net/123456789/468092
dc.languageen
dc.publisherUniversidad del Bío Bío
dc.relationhttp://www.redalyc.org/revista.oa?id=485
dc.rightsMaderas. Ciencia y Tecnología
dc.sourceMaderas. Ciencia y Tecnología (Chile) Vol.25
dc.subjectAgrociencias
dc.titleCharacterisation of lignins isolated from Bamboo organosolv and kraft black liquor
dc.typeartículo científico

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Maderas. Ciencia y Tecnología - Universidad del Bío Bío